I believe I've found that my problem does not lie with Shareport but rather with USB's ability to write large amounts of data. I was receiving delayed write errors each time my image backup would fail and this in turn would cause the Shareport drive connection to fail. I found this passage (below) on a web site and there are suggestions for a solution. For anyone who has a USB drive hanging off of your DIR-655 and you receive a delayed write error, the fault is not with Shareport. It may also be a product of Paragon Software's Hot Processing technology. I currently am running a demo copy of Acronis imaging software. I don't know what technology they use to be able to backup a locked partition but I will investigate further. I'll find out when I get home if Acronis was successful. If it is, I'm going to try Paragon again only this time I will disable Hot Processing and use Microsofts Volume Shadow Copy Service (VSS) instead. If that does not work, then I will pursue options for correcting the delayed write error.
"The problem itself seems to be from a memory cache on the USB adapter which drives my disk. It seems that when accessing big files, the cache gets corrupted and the drive becomes inaccessible. To rectify that, a filter driver should be installed, which will limit the packets’ size sent to the USB adapter bus."
-and it continues